Process  flow  sheet  at new production area  of Masteel  is  300 t LD-LF-RH-250 mm×2150 mm  CC  line.  The INTESTOP CS 100 framework of slide gate nozzle is used for 300 t ladle

of which the maximum standard casting nozzle diameter is  100 mm.Production practice showed that the maximum continuous-using number of times of slide gate was 6 heats

and the average using life of each set of framework was 600 times. Using the frameworks is available to obviously de- crease operation cost and improve reliability of slide gate nozzle. The main technical parameters of INTERSTOP CS  100 framework of slide gate nozzle

the using practice and existence problem during using process are presented in this article.